The Blueprint for Safety, Performance, and Compliance

When investing in a generator set, verifying compliance with international and local standards is not optional—it's a fundamental requirement for safety, reliability, and legal operation. This Purchase Guide demystifies the most critical standards you need to know.

1. ISO 8528: The Global Benchmark for Performance

This is the core international standard for alternating current (a.c.) generator sets. It defines everything from power ratings (Prime vs. Standby) to testing methods, performance classes, and reporting requirements.

• Why it matters: A generator claiming compliance with ISO 8528 has been designed and tested to globally recognized performance criteria. It ensures you get the power quality (voltage and frequency regulation) you paid for.
• Key Part: ISO 8528-5 specifically covers generating sets, while other parts cover engines, alternators, and control systems.

2. UL 2200: The Gold Standard for Safety (North American Influence)

UL 2200 is a rigorous safety standard for "Stationary Engine Generator Assemblies" published by Underwriters Laboratories. While a U.S. standard, it is highly respected globally, especially for projects with international financing or stringent safety protocols (e.g., data centers, oil & gas).

• Why it matters: UL 2200 certification means the complete generator assembly—engine, alternator, fuel system, controls, and enclosure—has been tested as an integrated system for fire, electrical, and mechanical hazards. It's a mark of superior safety engineering.

3. Local Grid Codes (e.g., G59/G99 in UK, IEEE 1547 in US)

These are arguably the most crucial and often overlooked standards for generators that will parallel with the utility grid (common in peak shaving or renewable integration).

• What they do: Grid codes specify the technical requirements for connecting generation equipment to the public network. They ensure the generator will not destabilize the grid. Key aspects include voltage and frequency ride-through capabilities, power quality (harmonics), and anti-islanding protection.
• Southeast Asia Context: Each country's grid operator (like PLN in Indonesia or EGAT in Thailand) has its own grid interconnection requirements. Your generator's control system and protection relays must be configured to comply with the local code.

Actionable Advice: Always request and review the relevant certification documents and test reports from your supplier. For complex grid-tied applications, involve an electrical consultant early to specify the exact local grid code requirements. Choosing a generator built to these high standards minimizes risk and ensures seamless integration into your power system.